參數(shù)資料
型號(hào)： MC68HC05C5P
廠商： MOTOROLA INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝： DIP-40
文件頁(yè)數(shù)： 3/58頁(yè)
文件大?。?/td> 166K
代理商： MC68HC05C5P
Page 5
Section 2: Operating Modes
MOTOROLA
MC68HC05C5 Specification Rev. 1.2
SECTION 2
OPERATING MODES
The MCU has two modes of operation: Single-Chip Mode and Self-Check Mode. Table
2-1 shows the conditions required to go into each mode, where V
TST = 2 x VDD.
Table 2-1: Operating Mode Conditions
2.1
SINGLE-CHIP MODE
In Single-Chip Mode, the address and data buses are not available externally, but there
are four 8-bit I/O ports.
This mode allows the MCU to function as a self-contained
microcontroller, with maximum use of the pins for on-chip peripheral functions.
All
address and data activity occurs within the MCU. Single-Chip Mode is entered on the
rising edge of RESET if the IRQ pin is within normal operating range.
RESET
IRQ
TCAP
MODE
V
SS
to V
DD
V
DD
Single-chip
Self-Check
V
SS
to V
DD
V
TST
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